Table 1 Parameters characterizing the orientation and depth of insertion of the CYP globular domain in the membrane bilayer, as well as the orientation of the TM-helix in the bilayer, in AA MD simulations for three CYP isoforms with GAFF-LIPID + ff99SB and with LIPID14 + ff14SB.
CYP Isoforms | CYP 2C9 | CYP 2C19 | CYP 1A1 | |||
---|---|---|---|---|---|---|
Force fields | GAFF-LIPID +ff99SB | LIPID14 + ff14SB | GAFF-LIPID +ff99SB | LIPID14 + ff14SB | GAFF-LIPID +ff99SB | LIPID14 + ff14SB |
Computed Parameters | ||||||
Protein CoM to membrane CoM distance (Å) | 40.3 ± 0.7 38.6 ± 0.9 | 45.5 ± 1.5 | 43.2 ± 0.9 46.2 ± 1.7 | 46.1 ± 2.6 | 36.0 ± 0.7 40.2 ± 1.2 | 40.6 ± 1.5 42.3 ± 1.6 |
Heme tilt angle (o) | 33.1 ± 3.7 28.6 ± 4.4 | 43.2 ± 4.8 | 42.1 ± 3.7 47.2 ± 4.5 | 60.5 ± 4.5 | 66.1 ± 2.9 51.4 ± 4.5 | 54.8 ± 6.1 53.5 ± 4.2 |
α angle (o) | 92.1 ± 2.4 79.4 ± 3.4 | 74.8 ± 4.3 | 76.8 ± 2.9 81.4 ± 4.4 | 106.3 ± 4.2 | 95.8 ± 1.6 96.4 ± 4.6 | 109.7 ± 4.6 85.0 ± 5.6 |
β angle (o) | 113.2 ± 2.5 112.2 ± 2.8 | 119.9 ± 4.5 | 122.7 ± 3.4 129.2 ± 3.8 | 148.6 ± 5.1 | 145.5 ± 1.7 135.8 ± 4.9 | 149.0 ± 2.9 121.2 ± 4.8 |
TM-helix tilt angle (o) | 17.9 ± 3.8 15.6 ± 3.3 | 11.9 ± 5.3 | 7.4 ± 4.1 14.4 ± 3.7 | 25.4 ± 7.8 | 28.4 ± 2.6 22.6 ± 4.4 | 23.4 ± 4.3 21.9 ± 5.3 |